Double hung window sash and frame construction



E. MOLL June 22, 1937.

DOUBLE HUNG WINDOW SASH AND FRAME CONSTRUCTION Original Filed Nov. 29, 1935 INVENTOR EdvTun Moll Ail 06f) 6 w m z 6 7 a U u "u n o n 2 ,1 win Patented June 22, 1937 PATENT OFFICE DOUBLE HUNG WINDOW SASH AND FRAME CONSTRUCTION Edwin Moll, Portland, Oreg.

Refiled for abandoned application Serial No.

700,229, November 29, 1933.

This application August 12, 1936, Serial No. 95,642

2 Claims.

My present invention provides adjustable 16 means for loading the spring supports to compensate for the difference in weight of different window sashes to be hung within the window frame, the spring supports being disposed within each side of the window frame. The difference 15 in the weight of glass used within the window sash, and the mat erials from which the sash is made very often varies substantially.

In my new and improved construction, as evidenced by this application, I provide means 20 for accommodating the weight to the springs without the necessity of cutting the same.

,A still further object of my invention is to provide means for positioning and supporting the sash pulley within the post of the window frame.

Astill further object of my present invention consists in providing hardware that is adapted for placement within the post and that may be adjusted for automatically supporting the window sashes in placed position without overload- 30 ing the spring support or without the cutting of the spring support to meet the purposes intended.

A still further object of this invention consists in so constructing and assembling the device that it may be placed in position upon the posts of 35 the window frame before the posts have been assembled into the completed frame.

With these and incidental objects in view, the invention consists in certain novel features of construction and combination of parts, the essential elements of which are set forth in the appended claims, and a preferred form of embodiment of which is hereinafter shown with reference to the drawing which accompanies and forms a part of this specification.

In the drawing:

Fig. 1 is a fragmentary sectional side view of the outside of the window frame.

Fig. 2 is a sectional side view of the mechanism illustrated in Fig. 1. This view is taken on line 2-2 of Fig. 1, looking in the direction indicated.

Fig. 3 is a fragmentary, rear side view of the assembly. This is an enlarged view and is made particularly to illustrate the means for attaching the spring support in adjusted placement.

Fig. 4 is a side view of the inside of the window frame post illustrating a pulley residing recess as having been cut out of the inside of the post to provide a place therein for supporting the pulley assembly.

Fig. 5 is a sectional end view of the mechanism illustrated in Fig. 3. This view is taken on line 5-5 of Fig. 3, looking in the direction indicated.

Fig. 6 is a sectional end view of the post of the window frame.

Like reference characters refer to like parts throughout the several views.

The post of the window frame is designated as I. In my present construction I rout out a recess 2 within the side wall of the post of the window frame. A slit 3 is out within the post and the same extends longitudinally and centrally of the post and to the extreme ends 4 and 5 of the routed recess 2.

I secure a guide rod 6 within the inside of the post by any suitable fastening means as through the use of screws 1 and 8 that are disposed at the ends of the guide rod 6. This guide rod is preferably made of tubular or round material, the purpose and object of which is to form a supporting means and guide for the fastening plate 9. The fastening plate 9 has a serrated or toothed edge I0.

Fastening ears II and I2 are disposed at the oppositely disposed ends of the fastening plate 9 and the guide rod 6 passes through these ears and permits the fastening plate to slide freely along the guideway 6. A plurality of pairs of spaced slits I3 and I3A are disposed within the plate 9. A bracket I4 is adjustably secured to the plate 9, the bracket having supporting legs l5 and I6 extending from one edge thereof and being adapted to be passed through one of the pairs of spaced slits I3 and l3A. The leg I6 extends through the slits I3 and the leg I5 extends through the slit I3A and as the legs I6 and I5 are passed through the slits IBA and I3 respectively and the bracket I4 is moved longitudinally of the slits, the foot I'I engages the face I9 of the plate 9 and locks the same in placement. The inner edge 20 of the foot I! is preferably inclined at an angle to that of the edge I8 of the bracket body so that a tight frictional engagement is developed between the foot I! and the face I9 of the plate 9 when the bracket is forced home within the slits.

An ear 2| upwardly extends from the outer edge of the bracket I4 to form a hook on which the window sash pulley 22 may be hung. The sash cord 23 is trained about the pulley and the end of the sash cord is fastened to the bottom of the respective window sashes, not here shown.

A reacting element as a coil spring 24 is secured upon its one end to the window frame by any suitable support, as through the use of a screw eye 25. The screw eye 25 is preferably secured to the top cross member 26 of the window frame and the oppositely disposed end of the reacting element 24 is secured to an adjustable hook ill. The adjustable hook 2'! is hingedly secured to a strip member 28 by any suitable hinge pin 29 and a locking member 30 carried by the adjustable hook 21 is adapted to be hinged into and out of locking engagement with the teeth ill of the plate.

The strip member 28 is secured to the plate 9 by return bends 3i and 32 that are formed in the strip member 28 and that engage the outer face edges 35 of the plate 9 to form a guideway in which the rod is disposed.

Upon installation of the window frame in place in the wall opening prepared for it, the sashes are fitted and hung, and the spring 24 is adjusted to the desired tension by manipulation of the locking latch ill relative to the fastening plate 9, to which in turn pulleys 22 are suspended by means of the brackets Hi. When the desired spring tension is secured, the window frame casing is placed in position. Subsequent adjustment of the spring tension may be eifected directly by first removing the side casing members.

In operation, the opposite ends of the sash cord 28 are secured to the bottom ends of the respective sashes. The tension of the spring is set so that it is sufiicient to hold the sash in any position but is insufiicient to overcome the friction between the sash and the frame to raise the sash Without added force being applied to the sash. When the bottom sash is raised, tension upon the spring 24 will be relieved and the plate 53 will move on the rod 6 toward the top.

If the top sash is lowered, a greater tension will be placed on the spring 24 by the movement of the plate 9 downwardly on the rod 6.

If the bottom sash is raised and the top sash is lowered an equal amount, the tension on the spring will be unchanged as there would be no movement of the plate 9 either up or down.

While the form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended to confine the invention to the embodiment herein shown and described, as it is susceptible of embodiment in various forms, all coming Within the scope of the claims which follow.

What I claim is:

l. A sash balance for association with the post of a window frame having a pulley receiving recess in one side of the post and a 'slit extending through the wall and longitudinally of the post and recess, said sash balance comprising a guide secured at its ends to the post, a slide movable relative to the guide, said slide having pairs of spaced slits therein and a toothed edge, a bracket adjustably secured within the spaced slits, a sash cord pulley removably attached to the bracket, a hook cooperating with the toothed edge of the slide to adjustably secure the hook on said slide, and a reacting element, one end of which is secured to said hook, the other end being adapted to be secured to the window frame.

2. A sash balance for association with the'post of a window frame having a pulley receiving recess in one side of the post and a slit extending through the wall and longitudinally of the post and recess, said sash balance comprising a'guide secured at its ends to and spaced from the post,

a plate member disposed upon the guide and slidable relative thereto, said slidable plate having pairs of spaced slits therein and a toothed edge, a bracket that may be secured in any of the pairs of slits, a sash cord pulley removably attached to the bracket, a hook slidably secured to the slidable plate, a locking lug disposed upon the hook and adapted tocooperate with the toothed edge of the slidable plate to adjustably position the hook relative to the slidable plate, and a reacting element, one end of which is secured to said hook, the other end being secured to the top member of the window frame.

EDWIN MOLL. 

